Leases - Summary of Components of Operating Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Leases [Abstract]
Operating lease costs	$ 2,163
Short-term lease costs	26
Variable lease costs	139
Less: Sublease income	(28)
Total operating lease costs	$ 2,300	$ 2,028